diff --git a/src/main/java/com/ongil/backend/domain/brand/service/BrandService.java b/src/main/java/com/ongil/backend/domain/brand/service/BrandService.java
index 6c01005..2f1d46b 100644
--- a/src/main/java/com/ongil/backend/domain/brand/service/BrandService.java
+++ b/src/main/java/com/ongil/backend/domain/brand/service/BrandService.java
@@ -23,7 +23,9 @@
 import com.ongil.backend.global.config.redis.RedisCacheService;
 
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 
+@Slf4j
 @Service
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
@@ -43,7 +45,7 @@ public List<BrandResponse> getAllBrands() {
 			BrandResponse.class
 		);
 
-		if (cached != null) {
+		if (cached != null && !cached.isEmpty()) {
 			return cached;
 		}
 
@@ -51,6 +53,11 @@ public List<BrandResponse> getAllBrands() {
 		List<Brand> brands = brandRepository.findAllOrderByName();
 		List<BrandResponse> response = brandConverter.toResponseList(brands);
 
+		if (response.isEmpty()) {
+			log.warn("조회된 브랜드가 없습니다.");
+			return response;
+		}
+
 		// Redis 캐싱 (무한 TTL)
 		redisCacheService.save(
 			CacheKeyConstants.BRANDS_ALL,
diff --git a/src/main/java/com/ongil/backend/domain/category/service/CategoryService.java b/src/main/java/com/ongil/backend/domain/category/service/CategoryService.java
index 7e72d8b..51f4f89 100644
--- a/src/main/java/com/ongil/backend/domain/category/service/CategoryService.java
+++ b/src/main/java/com/ongil/backend/domain/category/service/CategoryService.java
@@ -23,7 +23,9 @@
 import com.ongil.backend.global.config.redis.RedisCacheService;
 
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 
+@Slf4j
 @Service
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
@@ -42,7 +44,7 @@ public List<CategoryResponse> getAllCategories() {
 			CategoryResponse.class
 		);
 
-		if (cached != null) {
+		if (cached != null && !cached.isEmpty()) {
 			return cached;
 		}
 
@@ -67,6 +69,11 @@ public List<CategoryResponse> getAllCategories() {
 			.filter(r -> r != null)
 			.collect(Collectors.toList());
 
+		if (response.isEmpty()) {
+			log.warn("조회된 카테고리가 없습니다.");
+			return response;
+		}
+
 		// Redis 캐싱 (무한 TTL)
 		redisCacheService.save(
 			CacheKeyConstants.CATEGORIES_ALL,